1 (* ========================================================================== *)
2 (* FLYSPECK - BOOK FORMALIZATION *)
5 (* Author: Hoang Le Truong *)
7 (* ========================================================================== *)
12 module Sum_azim_node = struct
19 open Hypermap_of_fan;;
23 open Hypermap_of_fan;;
29 (* ========================================================================== *)
30 (* UNIONS IN NODE OF FAN *)
31 (* ========================================================================== *)
37 let lemma_disjiont_exists_fan2=prove(`!x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 n:num.
38 ~(v=x) /\ ~(u=x) /\ (~(collinear {x, v, u})) /\ {v,u} IN E /\ (v IN V) /\ (u IN V) /\ fan (x,V,E)
39 ==> if_azims_fan x V E v u (0) = &0`,
40 REPEAT GEN_TAC THEN REWRITE_TAC[fan;fan1] THEN STRIP_TAC
41 THEN MP_TAC(ISPECL [`v:real^3`; `(V:real^3->bool)`; `(E:(real^3->bool)->bool)`]remark_finite_fan1)
42 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
43 THEN SUBGOAL_THEN `(u:real^3) IN set_of_edge (v:real^3) (V:real^3->bool)(E:(real^3->bool)->bool)` ASSUME_TAC
45 REWRITE_TAC[set_of_edge; IN_ELIM_THM] THEN ASM_REWRITE_TAC[];
46 SUBGOAL_THEN ` ~( 0 = CARD (set_of_edge (v:real^3) (V:real^3->bool)(E:((real^3)->bool)->bool))) ` ASSUME_TAC
49 THEN MP_TAC(ISPEC `set_of_edge (v:real^3) (V:real^3->bool) (E:((real^3)->bool)->bool)`CARD_EQ_0)
50 THEN ASM_REWRITE_TAC[] THEN ASM_SET_TAC[];
51 SUBGOAL_THEN `azim (x:real^3) (v:real^3) (u:real^3) (u:real^3)= &0` ASSUME_TAC
53 ASM_MESON_TAC[ AZIM_REFL];
54 REWRITE_TAC[if_azims_fan; power_map_points;azim;] THEN ASM_REWRITE_TAC[]]]]);;
61 let lemma_disjiont_exists_fan3=prove(
62 `!x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 y:real^3 n:num.
63 ~(v=x) /\ ~(u=x) /\ (~(collinear {x, v, u})) /\ {v,u} IN E /\ (v IN V) /\ (u IN V) /\ fan (x,V,E)
64 ==> (if_azims_fan x V E v u 0 <= azim x v u y)`,
65 REPEAT GEN_TAC THEN STRIP_TAC
66 THEN MP_TAC(ISPECL[`x:real^3`; `v:real^3`; `u:real^3`; `y:real^3`] azim)
68 THEN MP_TAC(ISPECL[`x:real^3` ; `(V:real^3->bool)`; `(E:(real^3->bool)->bool)` ;`v:real^3` ;`u:real^3`; `n:num`]lemma_disjiont_exists_fan2)
69 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN ASM_REWRITE_TAC[azim]);;
72 let wedge2_fan=new_definition`wedge2_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num) =
73 {y:real^3 | ( if_azims_fan x V E v u i = azim x v u y)/\ ( y IN complement_set {x, v})}`;;
77 let aff_gt_subset_wedge_fan2=prove(`!x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 i:num.
78 ~(i= CARD (set_of_edge v V E))
79 /\ ~collinear {x,v,u} /\ ~collinear {x,v, power_map_points sigma_fan x V E v u i}
81 aff_gt {x , v} {power_map_points sigma_fan x V E v u i} SUBSET wedge2_fan x V E v u i `,
83 REWRITE_TAC[SUBSET] THEN REPEAT GEN_TAC THEN
84 ASSUME_TAC(affine_hull_2_fan)
85 THEN STRIP_TAC THEN ASSUME_TAC(th3)
86 THEN POP_ASSUM (MP_TAC o ISPECL [`x:real^3`;`v:real^3`;`(power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))`])
87 THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
88 THEN ASSUME_TAC(AFF_GT_2_1)
89 THEN POP_ASSUM (MP_TAC o ISPECL [`x:real^3`;`v:real^3`;`(power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))`])
90 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN ASM_REWRITE_TAC[]
91 THEN GEN_TAC THEN REWRITE_TAC[wedge2_fan; IN_ELIM_THM; LEFT_IMP_EXISTS_THM] THEN
92 REPEAT GEN_TAC THEN STRIP_TAC THEN ASM_REWRITE_TAC[] THEN SUBGOAL_THEN `~((t3:real) = &0)` ASSUME_TAC
94 [REPEAT (POP_ASSUM MP_TAC) THEN REAL_ARITH_TAC;
96 THEN POP_ASSUM( MP_TAC o ISPECL[`x:real^3`;` v:real^3`;` u:real^3`;` power_map_points sigma_fan x V E v u i` ;`t1:real` ;`t2:real` ;`t3:real`])
97 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
98 SUBGOAL_THEN `t1 % x + t2 % v + t3 % power_map_points sigma_fan x V E v u i IN
99 complement_set {x, v}` ASSUME_TAC
101 [ASM_MESON_TAC[COMPLEMENT_SET_FAN];
102 ASM_REWRITE_TAC[] THEN REWRITE_TAC[if_azims_fan;]
103 THEN ASM_MESON_TAC[REAL_ARITH`((t3:real)> &0) <=> (&0 < t3)`]]]);;
107 let wedge_fan2_subset_aff_gt=prove(`!x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 i:num.
108 ~collinear {x,v,u} /\ ~collinear {x, v, power_map_points sigma_fan x V E v u i}
109 /\ ~(i= CARD (set_of_edge v V E))
111 wedge2_fan x V E v u i SUBSET aff_gt {x , v} {power_map_points sigma_fan x V E v u i}`,
113 ASSUME_TAC(affine_hull_2_fan) THEN
114 STRIP_TAC THEN ASSUME_TAC(th3)
115 THEN POP_ASSUM (MP_TAC o ISPECL [`x:real^3`;`v:real^3`;`(power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))`])
116 THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
117 THEN ASSUME_TAC(AFF_GT_2_1)
118 THEN POP_ASSUM (MP_TAC o ISPECL [`x:real^3`;`v:real^3`;`(power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))`])
119 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN ASM_REWRITE_TAC[]
120 THEN REWRITE_TAC[SUBSET] THEN GEN_TAC
121 THEN REWRITE_TAC[wedge2_fan;IN_ELIM_THM] THEN REWRITE_TAC[if_azims_fan; azim] THEN ASM_REWRITE_TAC[]
123 THEN ASSUME_TAC(th2) THEN POP_ASSUM(MP_TAC o ISPECL[`x:real^3`; `v:real^3`;`x':real^3`])
124 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
126 THEN POP_ASSUM (MP_TAC o SPECL [`x:real^3`;`v:real^3`;`u:real^3`;`(power_map_points sigma_fan x (V:real^3->bool) (E:(real^3->bool)->bool) v u (i:num)):real^3`;]) THEN ASM_REWRITE_TAC[] THEN REWRITE_TAC[EXTENSION] THEN DISCH_TAC
127 THEN POP_ASSUM (MP_TAC o ISPEC `x':real^3`)THEN
128 REWRITE_TAC[IN_ELIM_THM] THEN ASM_REWRITE_TAC[]);;
132 let wedge_fan2_equal_aff_gt=prove(
133 ` !x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 i:num.
134 ~collinear {x,v,u} /\ ~collinear {x, v, power_map_points sigma_fan x V E v u i}
135 /\ ~(i= CARD (set_of_edge v V E))
137 wedge2_fan x V E v u i = aff_gt {x , v} {power_map_points sigma_fan x V E v u i} `,
138 REPEAT GEN_TAC THEN STRIP_TAC THEN
139 SUBGOAL_THEN `wedge2_fan x V E v u i SUBSET aff_gt {x , v} {power_map_points sigma_fan x V E v u i}` ASSUME_TAC
141 [ ASM_MESON_TAC[ wedge_fan2_subset_aff_gt;aff_gt_subset_wedge_fan2];
143 aff_gt {(x:real^3), (v:real^3)} {power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)} SUBSET wedge2_fan (x:real^3) V E (v:real^3) (u:real^3) (i:num)` ASSUME_TAC
144 THENL[ASM_MESON_TAC[aff_gt_subset_wedge_fan2];
148 let wedge_fan2_equal_aff_gt_fan=prove(` !x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 i:num.
149 FAN(x,V,E)/\ ({v,u} IN E)
150 /\ ~(i= CARD (set_of_edge v V E))
152 wedge2_fan x V E v u i = aff_gt {x , v} {power_map_points sigma_fan x V E v u i} `,
154 REPEAT GEN_TAC THEN STRIP_TAC THEN REPEAT (POP_ASSUM MP_TAC) THEN DISCH_THEN (LABEL_TAC"a") THEN USE_THEN "a" MP_TAC
155 THEN REWRITE_TAC[FAN;fan6] THEN STRIP_TAC THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN DISCH_THEN (LABEL_TAC "b")
156 THEN REPEAT STRIP_TAC
157 THEN MP_TAC (ISPECL[`(x:real^3)`;` (V:real^3->bool)`;` (E:(real^3->bool)->bool)`;`(v:real^3)`;` (u:real^3)`]properties_of_set_of_edge_fan)
158 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
160 MP_TAC(ISPECL[`(i:num)`; `(x:real^3)`;` (V:real^3->bool)`;
161 ` (E:(real^3->bool)->bool)`;` (v:real^3)`;` (u:real^3)`] image_power_map_points) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
163 MP_TAC (ISPECL[`(x:real^3)`;` (V:real^3->bool)`;` (E:(real^3->bool)->bool)`;`(v:real^3)`;` power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)`]properties_of_set_of_edge_fan)
164 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN USE_THEN "b" (fun th-> MP_TAC(ISPEC`{(v:real^3),(u:real^3)}`th)) THEN REMOVE_THEN "b" (fun th-> MP_TAC(ISPEC`{(v:real^3),(power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))}`th)) THEN ASM_REWRITE_TAC[SET_RULE`{a} UNION {b,c}={a,b,c}`] THEN DISCH_TAC THEN DISCH_TAC THEN ASM_MESON_TAC[wedge_fan2_equal_aff_gt]);;
167 (*****wedge3_fan=w_dart_fan*******)
169 let wedge3_fan=new_definition`wedge3_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num) =
170 {y:real^3 | ( if_azims_fan x V E v u (i) < azim x v u y)/\
171 (azim x v u y < if_azims_fan x V E v u (SUC i)) /\( y IN complement_set {x, v})}`;;
180 let w_dart_eq_wedge3_fan=prove(` !x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 i:num.
181 FAN(x,V,E) /\ ({v,u} IN E)
182 /\ (i< CARD (set_of_edge v V E))
183 /\ CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))> 1
185 w_dart_fan x V E (x,v,power_map_points sigma_fan x V E v u i, power_map_points sigma_fan x V E v u (SUC i))
186 = wedge3_fan x V E v u i`,
188 REPEAT GEN_TAC THEN STRIP_TAC
189 THEN REPEAT (POP_ASSUM MP_TAC) THEN DISCH_THEN(LABEL_TAC "a") THEN USE_THEN "a" MP_TAC THEN REWRITE_TAC[FAN;fan6] THEN
190 STRIP_TAC THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN DISCH_THEN(LABEL_TAC"1") THEN REPEAT STRIP_TAC
191 THEN MP_TAC(ISPECL[`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` u:real^3`;` v:real^3`]th4) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
193 ASM_REWRITE_TAC[w_dart_fan;wedge;wedge3_fan;complement_set; IN_ELIM_THM;collinear_fan]
194 THEN DISJ_CASES_TAC(ARITH_RULE`i=0 \/ 0< (i:num)`)
197 MP_TAC(ARITH_RULE`CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)) > 1 ==> ~(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))= 0)/\ ~(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))=1)`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
198 ASM_REWRITE_TAC[power_map_points;if_azims_fan;ARITH_RULE`SUC 0 =1`;AZIM_REFL;] THEN ASM_REWRITE_TAC[] THEN ASM_SET_TAC[];
200 MP_TAC(ARITH_RULE`(i:num)<CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))==> ~(i=CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
201 MP_TAC(ISPECL[`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` v:real^3`;` u:real^3`;`i:num`]SUM_IF_AZIMS_FAN)
202 THEN ASM_REWRITE_TAC[] THEN DISCH_THEN(LABEL_TAC "bc") THEN ASM_REWRITE_TAC[if_azims_fan;EXTENSION;IN_ELIM_THM] THEN GEN_TAC THEN EQ_TAC
205 STRIP_TAC THEN ASM_REWRITE_TAC[] THEN MP_TAC(REAL_ARITH`azim (x:real^3) (v:real^3) ( power_map_points sigma_fan (x:real^3)
206 (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) (x':real^3) < azim (x:real^3) (v:real^3)
207 ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))
208 (sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
209 (power_map_points sigma_fan (x:real^3) (V:real^3->bool)
210 (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) )
211 ==> azim (x:real^3) (v:real^3) (u:real^3) ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)
212 (v:real^3) (u:real^3) (i:num)) + azim (x:real^3) (v:real^3) ( power_map_points sigma_fan (x:real^3) (V:real^3->bool)
213 (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) (x':real^3)< azim (x:real^3) (v:real^3) (u:real^3)
214 ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))
215 + azim (x:real^3) (v:real^3) ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
216 (u:real^3) (i:num)) (sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
217 ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) )`)
218 THEN ASM_REWRITE_TAC[]
219 THEN REMOVE_THEN "bc" MP_TAC THEN GEN_REWRITE_TAC (LAND_CONV o RAND_CONV o REDEPTH_CONV) [if_azims_fan;power_map_points]
220 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
221 THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)]) THEN DISCH_TAC
222 THEN ASSUME_TAC (ISPECL[`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` v:real^3`;` u:real^3`;`SUC i:num`]if_azims_works_fan)
223 THEN MP_TAC(REAL_ARITH`azim (x:real^3) (v:real^3) (u:real^3) ( power_map_points sigma_fan (x:real^3)
224 (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) + azim (x:real^3) (v:real^3)
225 ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))
226 (x':real^3)< if_azims_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)
227 (v:real^3) (u:real^3) (SUC(i:num)) /\ if_azims_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)
228 (v:real^3) (u:real^3) (SUC(i:num)) <= &2 *pi ==> azim (x:real^3) (v:real^3) (u:real^3)
229 ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))
230 + azim (x:real^3) (v:real^3) ( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
231 (u:real^3) (i:num)) (x':real^3)< &2 * pi`)
232 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`x':real^3`]collinear_fan) THEN ASM_REWRITE_TAC[]
234 THEN MP_TAC(ISPECL[`i:num`;`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` v:real^3`;` u:real^3`]IN2_ORBITS_FAN) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
235 THEN MP_TAC(ISPECL[`SUC(i:num)`;`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` v:real^3`;` u:real^3`]IN2_ORBITS_FAN) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
236 THEN REMOVE_THEN "1" (fun th-> MP_TAC(ISPEC`{(v:real^3),(u:real^3)}`th)THEN ASSUME_TAC(th))
237 THEN POP_ASSUM (fun th-> MP_TAC(ISPEC`{(v:real^3),( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
238 (u:real^3) (i:num))}`th)) THEN ASM_REWRITE_TAC[SET_RULE`{a}UNION {b,c}={a,b,c}`]THEN DISCH_TAC THEN DISCH_TAC
239 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
240 (u:real^3) (i:num))`; `x':real^3`]sum3_azim_fan) THEN ASM_REWRITE_TAC[]
241 THEN DISCH_TAC THEN ASM_REWRITE_TAC[]
242 THEN ASM_REWRITE_TAC[REAL_ARITH`(a:real) < a +b <=> &0 < b`; REAL_ARITH`(a:real) + c< a +b<=> c< b`;];
244 STRIP_TAC THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC
245 THEN DISCH_THEN(LABEL_TAC"ma1") THEN DISCH_THEN(LABEL_TAC"ma2") THEN DISCH_TAC
246 THEN ASM_REWRITE_TAC[] THEN
247 MP_TAC(REAL_ARITH`azim (x:real^3) (v:real^3) (u:real^3) ( power_map_points sigma_fan (x:real^3)
248 (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) < azim (x:real^3) (v:real^3) (u:real^3)
250 ==> azim (x:real^3) (v:real^3) (u:real^3) ( power_map_points sigma_fan (x:real^3)
251 (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)) <= azim (x:real^3) (v:real^3) (u:real^3)
254 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
256 MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`x':real^3`]collinear_fan) THEN ASM_REWRITE_TAC[]
258 THEN MP_TAC(ISPECL[`i:num`;`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` v:real^3`;` u:real^3`]IN2_ORBITS_FAN) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
259 THEN MP_TAC(ISPECL[`SUC(i:num)`;`x:real^3 `;` (V:real^3->bool) `;`(E:(real^3->bool)->bool)`;` v:real^3`;` u:real^3`]IN2_ORBITS_FAN) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
260 THEN REMOVE_THEN "1" (fun th-> MP_TAC(ISPEC`{(v:real^3),(u:real^3)}`th)THEN ASSUME_TAC(th))
261 THEN POP_ASSUM (fun th-> MP_TAC(ISPEC`{(v:real^3),( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
262 (u:real^3) (i:num))}`th)) THEN ASM_REWRITE_TAC[SET_RULE`{a}UNION {b,c}={a,b,c}`]THEN DISCH_TAC THEN DISCH_TAC
263 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
264 (u:real^3) (i:num))`; `x':real^3`]sum4_azim_fan) THEN ASM_REWRITE_TAC[]
266 THEN REMOVE_THEN "ma1" MP_TAC THEN REMOVE_THEN "ma2" MP_TAC
267 THEN ASM_REWRITE_TAC[power_map_points] THEN REAL_ARITH_TAC]]);;
277 `!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3).
278 FAN(x,V,E)/\ ({v,u}IN E)
280 (UNIV:real^3->bool) = aff {x,v} UNION (UNIONS {wedge3_fan x V E v u i|i| 0 <= i /\ i< CARD(set_of_edge v V E) })
282 (UNIONS {wedge2_fan x V E v u i|i| 0 <= i /\ i< CARD(set_of_edge v V E) } )
285 REPEAT STRIP_TAC THEN REWRITE_TAC[EXTENSION; UNION;IN_ELIM_THM] THEN GEN_TAC THEN EQ_TAC
287 STRIP_TAC THEN DISJ_CASES_TAC(SET_RULE`(x':real^3) IN aff {(x:real^3),(v:real^3)} \/ ~((x':real^3) IN aff {x,v})`)
292 THEN DISJ_CASES_TAC(SET_RULE`(x':real^3) IN (UNIONS {wedge2_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)|i| 0 <= i /\ i< CARD(set_of_edge v V E)} )
293 \/ ~((x':real^3) IN (UNIONS {wedge2_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)|i| 0 <= i/\ i< CARD(set_of_edge v V E)}) )`)
295 ASM_REWRITE_TAC[];(*3*)
297 THEN POP_ASSUM MP_TAC THEN REWRITE_TAC[UNIONS;IN_ELIM_THM;NOT_EXISTS_THM;DE_MORGAN_THM;ARITH_RULE `(0 <= (i:num))`]
298 THEN DISCH_TAC THEN SUBGOAL_THEN`!i:num. ~((x':real^3) IN wedge2_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num))\/ ~(i< CARD(set_of_edge v V E)) ` ASSUME_TAC
302 POP_ASSUM MP_TAC THEN REWRITE_TAC[wedge2_fan;IN_ELIM_THM] THEN DISCH_THEN(LABEL_TAC"100")
303 THEN SUBGOAL_THEN`(~((x':real^3) IN set_of_orbits_points_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3)))` ASSUME_TAC
305 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`]SIMP_ORBITS_POINTS_FAN) THEN ASM_REWRITE_TAC[]
307 THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])
308 THEN REWRITE_TAC[IN_ELIM_THM] THEN POP_ASSUM MP_TAC THEN DISCH_THEN(LABEL_TAC"a") THEN STRIP_TAC
309 THEN REMOVE_THEN "a"(fun th-> MP_TAC(ISPEC`i:num`th))
310 THEN MP_TAC(ARITH_RULE`(i:num) < CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))==> ~(i=CARD(set_of_edge v V E))`)
311 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
312 THEN ASM_REWRITE_TAC[if_azims_fan;complement_set; IN_ELIM_THM]
313 THEN ASM_MESON_TAC[remark_power_map_points];(*5*)
315 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`]SIMP_ORBITS_POINTS_FAN) THEN ASM_REWRITE_TAC[]
316 THEN DISCH_THEN(LABEL_TAC"a")
317 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`x':real^3`]exists_inverse_in_orbits_sigma_fan) THEN ASM_REWRITE_TAC[azim1]
319 THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC
320 THEN POP_ASSUM MP_TAC THEN DISCH_THEN(LABEL_TAC"b")
321 THEN DISCH_TAC THEN DISCH_TAC
322 THEN REMOVE_THEN "b" MP_TAC
323 THEN REMOVE_THEN "a"(fun th->REWRITE_TAC[SYM(th)] THEN ASSUME_TAC(th))
324 THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN DISCH_THEN(LABEL_TAC"a") THEN DISCH_TAC
325 THEN REWRITE_TAC[IN_ELIM_THM]
327 THEN EXISTS_TAC`wedge3_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num)`
330 EXISTS_TAC`i:num` THEN ASM_REWRITE_TAC[];(*6*)
332 ASM_REWRITE_TAC[wedge3_fan; complement_set; IN_ELIM_THM;]
333 THEN SUBGOAL_THEN`if_azims_fan x (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3) (i:num) < azim (x:real^3) v u (x':real^3)` ASSUME_TAC
335 MP_TAC(ARITH_RULE`(i:num) < CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))==> ~(i=CARD(set_of_edge v V E))`)
336 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
337 THEN ASM_REWRITE_TAC[if_azims_fan;complement_set; IN_ELIM_THM]
338 THEN POP_ASSUM MP_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)] THEN ASSUME_TAC(th)) THEN POP_ASSUM MP_TAC
339 THEN DISJ_CASES_TAC(ARITH_RULE`(i:num)=0 \/ 0< i`)
342 ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC THEN ASM_REWRITE_TAC[AZIM_REFL]
343 THEN POP_ASSUM (fun th->REWRITE_TAC[])
344 THEN POP_ASSUM (fun th->REWRITE_TAC[])
345 THEN POP_ASSUM (fun th->REWRITE_TAC[])
346 THEN POP_ASSUM (fun th->REWRITE_TAC[])
347 THEN POP_ASSUM (fun th->REWRITE_TAC[])
348 THEN POP_ASSUM (fun th->REWRITE_TAC[])
349 THEN POP_ASSUM (fun th->REWRITE_TAC[])
350 THEN POP_ASSUM (fun th->MP_TAC(ISPEC`0`th)) THEN DISCH_THEN(LABEL_TAC"a")
351 THEN DISCH_TAC THEN REMOVE_THEN "a" MP_TAC THEN ASM_REWRITE_TAC[if_azims_fan;power_map_points;DE_MORGAN_THM; complement_set; IN_ELIM_THM;AZIM_REFL;ARITH_RULE`(~(0<a)<=> (0=a))`]
352 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`x':real^3`]azim ) THEN POP_ASSUM MP_TAC
353 THEN REAL_ARITH_TAC;(*8*)
355 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;] u_IN_ORBITS_FAN) THEN DISCH_TAC
356 THEN SUBGOAL_THEN `~(u=(x':real^3))` ASSUME_TAC
360 DISCH_TAC THEN REMOVE_THEN "a"(fun th-> MP_TAC(ISPEC`u:real^3`th)) THEN ASM_REWRITE_TAC[]
361 THEN REWRITE_TAC[REAL_ARITH`(b:real)- a<= b-c <=> c <= a`] THEN DISCH_THEN(LABEL_TAC"b1")
362 THEN MP_TAC(ARITH_RULE`0< (i:num)/\ i <CARD(set_of_edge (v:real^3) V E)==> ~(0=CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
364 THEN USE_THEN"100"(fun th-> MP_TAC(ISPEC`0`th)) THEN
365 REWRITE_TAC[if_azims_fan] THEN ASM_REWRITE_TAC[power_map_points;AZIM_REFL;complement_set; IN_ELIM_THM]
366 THEN MP_TAC(ARITH_RULE`i <CARD(set_of_edge (v:real^3) V E)==> ~(i=CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
368 THEN USE_THEN"100"(fun th-> MP_TAC(ISPEC`i:num`th)) THEN
369 REWRITE_TAC[if_azims_fan] THEN ASM_REWRITE_TAC[power_map_points;AZIM_REFL;complement_set; IN_ELIM_THM]
371 THEN GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[SET_RULE`a=b <=> b=a`] THEN DISCH_TAC
373 DISJ_CASES_TAC(SET_RULE`collinear {(x:real^3),v,x'} \/ ~collinear {x,v,x'}`)
376 POP_ASSUM MP_TAC THEN GEN_REWRITE_TAC( LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV) [SET_RULE`{a,b,c}= {a,c,b}`]
377 THEN REWRITE_TAC[COLLINEAR_3_EXPAND;]
378 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
379 THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
380 THEN SUBGOAL_THEN `(x':real^3) IN aff {x,v}` ASSUME_TAC
382 REWRITE_TAC[aff; AFFINE_HULL_2; IN_ELIM_THM] THEN EXISTS_TAC`u':real` THEN EXISTS_TAC`&1 -(u':real)` THEN ASM_REWRITE_TAC[]
383 THEN REAL_ARITH_TAC;(*11*)
384 ASM_MESON_TAC[]](*11*);(*10*)
388 POP_ASSUM MP_TAC THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
389 THEN MP_TAC(ISPECL[`i:num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] remark_power_map_points) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
391 MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`x':real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
392 (u:real^3) (i:num))`]AZIM_EQ_ALT) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
393 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
394 (u:real^3) (i:num))`;`x':real^3`]AZIM_EQ_0_ALT) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
395 THEN DISCH_TAC THEN MP_TAC(ISPECL[`(x:real^3) `;`(v:real^3)`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
396 (u:real^3) (i:num))`;` (x':real^3)`] AZIM_COMPL) THEN ASM_REWRITE_TAC[]
397 THEN MP_TAC(ISPECL[`(x:real^3) `;`(v:real^3)`;` (u:real^3)`;`(x':real^3)`] AZIM_COMPL) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN DISCH_TAC
398 THEN REMOVE_THEN"b1" MP_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`b-a<= b-c <=> c<= a`]
400 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`; `( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
401 (u:real^3) (i:num))`;` (x':real^3)`]sum5_azim_fan)
402 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
403 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
404 (u:real^3) (i:num))`;` (x':real^3)`]azim) THEN POP_ASSUM MP_TAC
405 THEN POP_ASSUM(fun th->REWRITE_TAC[])
406 THEN POP_ASSUM(fun th->REWRITE_TAC[])
407 THEN POP_ASSUM(fun th->REWRITE_TAC[])
408 THEN POP_ASSUM(fun th->REWRITE_TAC[])
409 THEN POP_ASSUM MP_TAC THEN REAL_ARITH_TAC;(*11*)
410 REPEAT (POP_ASSUM MP_TAC) THEN ARITH_TAC](*11*)](*10*)](*9*)](*8*);(*7*)
413 ASM_REWRITE_TAC[] THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN DISCH_THEN(LABEL_TAC"b") THEN DISCH_THEN(LABEL_TAC"c")
414 THEN DISJ_CASES_TAC(ARITH_RULE`SUC (i:num)= CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))\/ ~(SUC (i)= CARD(set_of_edge v V E))`)
417 ASM_REWRITE_TAC[if_azims_fan] THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`x':real^3`]azim) THEN REAL_ARITH_TAC;
419 DISJ_CASES_TAC(ARITH_RULE`(i:num)=0 \/ 0<i `)
421 REMOVE_THEN "b" MP_TAC THEN
422 ASM_REWRITE_TAC[if_azims_fan;power_map_points] THEN DISCH_TAC
423 THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)]THEN ASSUME_TAC(SYM(th)))
424 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;] u_IN_ORBITS_FAN) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
426 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`w:real^3`] IN_ORBITS_FAN) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
427 THEN SUBGOAL_THEN `~(sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
428 (w:real^3)=(x':real^3))` ASSUME_TAC
429 THENL(*10*)[ASM_SET_TAC[];(*10*)
431 REMOVE_THEN "a" (fun th -> MP_TAC(ISPEC`sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
432 (w:real^3)`th)) THEN ASM_REWRITE_TAC[REAL_ARITH`b-a<= b-c <=> c<= a`]THEN DISCH_THEN(LABEL_TAC"b1")
433 THEN MP_TAC(ARITH_RULE`(i:num)=0/\ i <CARD(set_of_edge (v:real^3) V E)==> ~(0=CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
435 THEN USE_THEN"100"(fun th-> MP_TAC(ISPEC`i:num`th)) THEN
436 REWRITE_TAC[if_azims_fan] THEN ASM_REWRITE_TAC[power_map_points;AZIM_REFL;complement_set; IN_ELIM_THM]
438 THEN GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[SET_RULE`a=b <=> b=a`] THEN DISCH_TAC
440 THEN MP_TAC(ARITH_RULE`(i:num)=0/\ ~(SUC(i) =CARD(set_of_edge (v:real^3) V E))==> ~(SUC(0)=CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
442 THEN USE_THEN"100"(fun th-> MP_TAC(ISPEC`SUC(0):num`th)) THEN
443 REWRITE_TAC[if_azims_fan] THEN ASM_REWRITE_TAC[power_map_points;AZIM_REFL;complement_set; IN_ELIM_THM]
445 THEN GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[SET_RULE`a=b <=> b=a`] THEN REWRITE_TAC[power_map_points]
447 DISJ_CASES_TAC(SET_RULE`collinear {(x:real^3),v,x'} \/ ~collinear {x,v,x'}`)
449 POP_ASSUM MP_TAC THEN GEN_REWRITE_TAC( LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV) [SET_RULE`{a,b,c}= {a,c,b}`]
450 THEN REWRITE_TAC[COLLINEAR_3_EXPAND;]
451 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
452 THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
453 THEN SUBGOAL_THEN `(x':real^3) IN aff {x,v}` ASSUME_TAC
455 REWRITE_TAC[aff; AFFINE_HULL_2; IN_ELIM_THM] THEN EXISTS_TAC`u':real` THEN EXISTS_TAC`&1 -(u':real)` THEN ASM_REWRITE_TAC[]
456 THEN REAL_ARITH_TAC;(*12*)
457 ASM_MESON_TAC[]](*12*);(*11*)
459 STRIP_TAC THENL(*12*)[
461 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
462 THEN MP_TAC(SET_RULE`(u:real^3)=(w:real^3) /\ {v,u} IN (E:(real^3->bool)->bool)==> {v,w} IN E`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
464 THEN MP_TAC(ISPECL[`SUC(0):num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] remark_power_map_points) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
466 MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`x':real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
467 (u:real^3) (SUC(0):num))`]AZIM_EQ_ALT) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
468 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
469 (u:real^3) (SUC(0):num))`;`x':real^3`]AZIM_EQ_0_ALT) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
470 THEN MP_TAC(ISPECL[`(x:real^3) `;`(v:real^3)`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
471 (u:real^3) (SUC(0):num))`;` (x':real^3)`] AZIM_COMPL) THEN ASM_REWRITE_TAC[power_map_points]
472 THEN MP_TAC(ISPECL[`(x:real^3) `;`(v:real^3)`;` (u:real^3)`;`(x':real^3)`] AZIM_COMPL) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN DISCH_TAC
473 THEN REMOVE_THEN"b1" MP_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`b-a<= b-c <=> c<= a`]
475 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
476 (u:real^3) (SUC(0):num))`;`w:real^3`;` (x':real^3)`]sum5_azim_fan)
477 THEN ASM_REWRITE_TAC[power_map_points;REAL_ARITH`a=b+c <=> c=a-b`] THEN
478 DISCH_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`a-b<c <=> a< b+c`]
479 THEN MP_TAC(ARITH_RULE` (i:num) < (CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))) /\ ~(SUC(i)=CARD(set_of_edge v V E)) ==> SUC(i) < CARD(set_of_edge v V E)`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
480 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`; `SUC(i):num`; `i:num`] cyclic_power_sigma_fan) THEN ASM_REWRITE_TAC[power_map_points;ARITH_RULE`0< SUC 0`; ] THEN DISCH_TAC
481 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
482 (u:real^3))`; `w:real^3`; ] UNIQUE_AZIM_0_POINT_FAN) THEN ASM_REWRITE_TAC[power_map_points; ]
483 THEN DISCH_TAC THEN MP_TAC(ISPECL[`x:real^3`; `v:real^3`;` (sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
484 (u:real^3))`; `w:real^3`]AZIM_COMPL) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`c<a+b-a <=> c<b`] THEN MESON_TAC[azim];(*12*)
486 REPEAT(POP_ASSUM MP_TAC) THEN ARITH_TAC](*12*)](*11*)](*10*);(*9*)
488 REMOVE_THEN "b" MP_TAC THEN
489 ASM_REWRITE_TAC[if_azims_fan;power_map_points] THEN DISCH_TAC
490 THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)]THEN ASSUME_TAC(SYM(th)))
491 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`i:num`] i_IN_ORBITS_FAN) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
493 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`w:real^3`] IN_ORBITS_FAN) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
494 THEN SUBGOAL_THEN `~(sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
495 (w:real^3)=(x':real^3))` ASSUME_TAC
496 THENL(*10*)[ ASM_SET_TAC[];(*10*)
498 REMOVE_THEN "a" (fun th -> MP_TAC(ISPEC`sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
499 (w:real^3)`th)) THEN ASM_REWRITE_TAC[REAL_ARITH`b-a<= b-c <=> c<= a`]THEN DISCH_THEN(LABEL_TAC"b1")
500 THEN MP_TAC(ARITH_RULE`i <CARD(set_of_edge (v:real^3) V E)==> ~(i=CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
502 THEN USE_THEN"100"(fun th-> MP_TAC(ISPEC`i:num`th)) THEN
503 REWRITE_TAC[if_azims_fan] THEN ASM_REWRITE_TAC[power_map_points;AZIM_REFL;complement_set; IN_ELIM_THM]
505 THEN GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[SET_RULE`a=b <=> b=a`] THEN DISCH_TAC
506 THEN USE_THEN"100"(fun th-> MP_TAC(ISPEC`SUC(i):num`th)) THEN
507 REWRITE_TAC[if_azims_fan] THEN ASM_REWRITE_TAC[power_map_points;AZIM_REFL;complement_set; IN_ELIM_THM]
509 THEN GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[SET_RULE`a=b <=> b=a`] THEN REWRITE_TAC[power_map_points]
511 DISJ_CASES_TAC(SET_RULE`collinear {(x:real^3),v,x'} \/ ~collinear {x,v,x'}`)
513 POP_ASSUM MP_TAC THEN GEN_REWRITE_TAC( LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV) [SET_RULE`{a,b,c}= {a,c,b}`]
514 THEN REWRITE_TAC[COLLINEAR_3_EXPAND;]
515 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
516 THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
517 THEN SUBGOAL_THEN `(x':real^3) IN aff {x,v}` ASSUME_TAC
519 REWRITE_TAC[aff; AFFINE_HULL_2; IN_ELIM_THM] THEN EXISTS_TAC`u':real` THEN EXISTS_TAC`&1 -(u':real)` THEN ASM_REWRITE_TAC[]
520 THEN REAL_ARITH_TAC;(*12*)
521 ASM_MESON_TAC[]](*12*);(*11*)
523 STRIP_TAC THENL(*12*)[
524 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
525 THEN MP_TAC(ISPECL[`i:num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] remark_power_map_points) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
526 THEN MP_TAC(ISPECL[`SUC(i):num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] remark_power_map_points) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
528 MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`x':real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
529 (u:real^3) (SUC(i):num))`]AZIM_EQ_ALT) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
530 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
531 (u:real^3) (SUC(i):num))`;`x':real^3`]AZIM_EQ_0_ALT) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
533 MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`;`x':real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
534 (u:real^3) ((i):num))`]AZIM_EQ_ALT) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
535 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
536 (u:real^3) ((i):num))`;`x':real^3`]AZIM_EQ_0_ALT) THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC
537 THEN MP_TAC(ISPECL[`(x:real^3) `;`(v:real^3)`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
538 (u:real^3) (SUC(i):num))`;` (x':real^3)`] AZIM_COMPL) THEN ASM_REWRITE_TAC[power_map_points]
539 THEN MP_TAC(ISPECL[`(x:real^3) `;`(v:real^3)`;` (w:real^3)`;`(x':real^3)`] AZIM_COMPL) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN DISCH_TAC
541 REMOVE_THEN "c" MP_TAC THEN ASM_REWRITE_TAC[if_azims_fan] THEN DISCH_TAC THEN
542 MP_TAC(REAL_ARITH`azim x v u w< azim (x:real^3) v u x'==> azim x v u w<= azim (x:real^3) v u x'`) THEN ASM_REWRITE_TAC[]
544 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`(u:real^3)`;`w:real^3`;` (x':real^3)`]sum4_azim_fan)
545 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
546 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`i:num`] SUM_IF_AZIMS_FAN) THEN ASM_REWRITE_TAC[if_azims_fan;power_map_points] THEN DISCH_TAC
547 THEN ASM_REWRITE_TAC[REAL_ARITH`a+b<a+c <=> b<c`]
548 THEN REMOVE_THEN"b1" MP_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`b-a<= b-c <=> c<= a`]
550 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
551 (u:real^3) (SUC(i):num))`;`w:real^3`;` (x':real^3)`]sum5_azim_fan)
552 THEN ASM_REWRITE_TAC[power_map_points;REAL_ARITH`a=b+c <=> c=a-b`]
553 THEN DISCH_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`a-b<c <=> a< b+c`]
554 THEN MP_TAC(ARITH_RULE` (i:num) < (CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))) /\ ~(SUC(i)=CARD(set_of_edge v V E)) ==> SUC(i) < CARD(set_of_edge v V E)`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
555 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`; `SUC(i):num`; `i:num`] cyclic_power_sigma_fan) THEN ASM_REWRITE_TAC[power_map_points;ARITH_RULE`i< SUC i`; ] THEN DISCH_TAC
556 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
557 (w:real^3))`; `w:real^3`; ] UNIQUE_AZIM_0_POINT_FAN) THEN ASM_REWRITE_TAC[power_map_points; ]
558 THEN DISCH_TAC THEN MP_TAC(ISPECL[`x:real^3`; `v:real^3`;` (sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
559 (w:real^3))`; `w:real^3`]AZIM_COMPL) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN ASM_REWRITE_TAC[REAL_ARITH`c<a+b-a <=> c<b`]
560 THEN MESON_TAC[azim];(*12*)
562 REPEAT(POP_ASSUM MP_TAC) THEN ARITH_TAC](*12*)](*11*)]]]]]]]]];
565 let eq_set_wdart_fan=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3).
566 FAN(x,V,E)/\ ({v,u}IN E)
568 ({w_dart_fan x V E (x,v,w,(sigma_fan x V E v w))|w| {v,w} IN E }
569 = {wedge3_fan x V E v u i|i| 0 <= i/\ i< CARD(set_of_edge v V E) })
572 (let lem= prove(`!x v u w.
573 (&0 < azim x v u w) <=> ~(azim x v u w= &0)`,
574 MESON_TAC[azim; REAL_ARITH`&0 <= a==> (&0 < a) <=> ~(a= &0)`]) in
575 ( let lem1=prove(`!x v. ~(x = v)==>(!u. ~(u IN aff {x, v}) <=> ~collinear {x, v, u})`,
576 MESON_TAC[collinear_fan]) in
577 (let lem2=prove(`!v0 v1 w.
578 ~collinear{v0,v1,w} ==>
579 !x. ( ~(azim v0 v1 w x = &0)/\ ~collinear{v0,v1,x} <=> ~(x IN aff_ge {v0,v1} {w}) /\ ~collinear{v0,v1,x})`,
580 MESON_TAC[AZIM_EQ_0_GE_ALT]) in
582 REPEAT STRIP_TAC THEN REWRITE_TAC[EXTENSION; IN_ELIM_THM] THEN GEN_TAC THEN EQ_TAC
584 REWRITE_TAC[GSYM(EXTENSION)] THEN STRIP_TAC
585 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] properties_of_set_of_edge_fan)
586 THEN ASM_REWRITE_TAC[] THEN
587 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
588 THEN ASM_REWRITE_TAC[] THEN
589 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] SIMP_ORBITS_POINTS_FAN)
590 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN DISCH_TAC
591 THEN POP_ASSUM(fun th->GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[th])
592 THEN REWRITE_TAC[IN_ELIM_THM;] THEN STRIP_TAC THEN EXISTS_TAC `i:num` THEN
593 ASM_REWRITE_TAC[ARITH_RULE`0<= (i:num)`]
594 THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC
595 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`]CARD_SET_OF_ORBITS_POINTS_FAN)
596 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
597 THEN ASM_REWRITE_TAC[] THEN REPEAT STRIP_TAC
599 DISJ_CASES_TAC(ARITH_RULE`(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))>1 \/ ~((CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))> 1)`)
601 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`i:num`] w_dart_eq_wedge3_fan)
602 THEN ASM_REWRITE_TAC[power_map_points];
604 MP_TAC(ARITH_RULE`(i:num)<CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)) /\ ~(CARD(set_of_edge v V E)>1)==> i=0`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
605 ASM_REWRITE_TAC[w_dart_fan;wedge3_fan;if_azims_fan;power_map_points]
606 THEN DISJ_CASES_TAC(ARITH_RULE` 0= CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)) \/ ~(0=CARD(set_of_edge v V E))`)
609 REPEAT (POP_ASSUM MP_TAC) THEN ARITH_TAC;
611 MP_TAC(ARITH_RULE`~(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))>1) /\ ~(0=CARD(set_of_edge v V E))==> SUC (0)=CARD(set_of_edge v V E)`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
612 ASM_REWRITE_TAC[complement_set;IN_ELIM_THM;AZIM_REFL;azim]
614 THEN ASM_REWRITE_TAC[] THEN
615 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
616 THEN ASM_REWRITE_TAC[] THEN
617 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] SIMP_ORBITS_POINTS_FAN)
618 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN
619 POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)]) THEN REWRITE_TAC[ARITH_RULE`(a:num) < SUC 0 <=> a=0`;SET_RULE`{f i| i=0}={f 0}`;
620 power_map_points] THEN DISCH_TAC THEN
621 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan)
622 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
623 MP_TAC(ISPECL[`x:real^3`;`v:real^3`]lem1) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
624 THEN ASM_REWRITE_TAC[lem] THEN POP_ASSUM (fun th-> REWRITE_TAC[])
625 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`]lem2) THEN POP_ASSUM (fun th-> REWRITE_TAC[th] THEN ASSUME_TAC(th))
626 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`]aff_subset_aff_ge)
627 THEN POP_ASSUM (fun th-> REWRITE_TAC[th] THEN ASSUME_TAC(th)) THEN DISCH_TAC
628 THEN DISCH_TAC THEN POP_ASSUM (fun th-> REWRITE_TAC[th;collinear_fan;]) THEN ASM_REWRITE_TAC[GSYM(DE_MORGAN_THM);]
629 THEN ASM_SET_TAC[]]];
631 REWRITE_TAC[GSYM(EXTENSION)] THEN STRIP_TAC
632 THEN EXISTS_TAC`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
633 (u:real^3) ((i):num)) ` THEN
634 MP_TAC(ISPECL[`i:num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] remark_power_map_points) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th->REWRITE_TAC[th])
635 THEN DISJ_CASES_TAC(ARITH_RULE`(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))>1 \/ ~((CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))> 1)`)
637 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`i:num`] w_dart_eq_wedge3_fan)
638 THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC THEN POP_ASSUM(fun th->REWRITE_TAC[th]);
640 MP_TAC(ARITH_RULE`(i:num)<CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)) /\ ~(CARD(set_of_edge v V E)>1)==> i=0`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
641 ASM_REWRITE_TAC[w_dart_fan;wedge3_fan;if_azims_fan;power_map_points]
642 THEN DISJ_CASES_TAC(ARITH_RULE` 0= CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)) \/ ~(0=CARD(set_of_edge v V E))`)
644 REPEAT (POP_ASSUM MP_TAC) THEN ARITH_TAC;
646 MP_TAC(ARITH_RULE`~(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool))>1) /\ ~(0=CARD(set_of_edge v V E))==> SUC (0)=CARD(set_of_edge v V E)`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
647 ASM_REWRITE_TAC[complement_set;IN_ELIM_THM;AZIM_REFL;azim]
649 THEN ASM_REWRITE_TAC[] THEN
650 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
651 THEN ASM_REWRITE_TAC[] THEN
652 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] SIMP_ORBITS_POINTS_FAN)
653 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN
654 POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)]) THEN REWRITE_TAC[ARITH_RULE`(a:num) < SUC 0 <=> a=0`;SET_RULE`{f i| i=0}={f 0}`;
655 power_map_points] THEN DISCH_TAC THEN
656 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (u:real^3)`;` (v:real^3)`] remark1_fan)
657 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
658 MP_TAC(ISPECL[`x:real^3`;`v:real^3`]lem1) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
659 THEN ASM_REWRITE_TAC[lem] THEN POP_ASSUM (fun th-> REWRITE_TAC[])
660 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`]lem2) THEN POP_ASSUM (fun th-> REWRITE_TAC[th] THEN ASSUME_TAC(th))
661 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`u:real^3`]aff_subset_aff_ge)
662 THEN POP_ASSUM (fun th-> REWRITE_TAC[th] THEN ASSUME_TAC(th)) THEN DISCH_TAC
663 THEN DISCH_TAC THEN POP_ASSUM (fun th-> REWRITE_TAC[th;collinear_fan;]) THEN ASM_REWRITE_TAC[GSYM(DE_MORGAN_THM);]
664 THEN ASM_SET_TAC[]]]]))));;
669 let eq_set_aff_gt=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3).
670 FAN(x,V,E)/\ ({v,u}IN E)
671 ==> {aff_gt {x,v} {w} |w| {v,w} IN E}
672 ={wedge2_fan x V E v u i|i| 0 <= i /\ i< CARD(set_of_edge v V E) }`,
674 REPEAT STRIP_TAC THEN REWRITE_TAC[EXTENSION; IN_ELIM_THM] THEN GEN_TAC THEN EQ_TAC
676 REWRITE_TAC[GSYM(EXTENSION)] THEN STRIP_TAC
677 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] properties_of_set_of_edge_fan)
678 THEN ASM_REWRITE_TAC[] THEN
679 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
680 THEN ASM_REWRITE_TAC[] THEN
681 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] SIMP_ORBITS_POINTS_FAN)
682 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN DISCH_TAC
683 THEN POP_ASSUM(fun th->GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[th])
684 THEN REWRITE_TAC[IN_ELIM_THM;] THEN STRIP_TAC THEN EXISTS_TAC `i:num` THEN
685 ASM_REWRITE_TAC[ARITH_RULE`0 <= i`]
687 THEN MP_TAC(ARITH_RULE`(i:num) < CARD(set_of_edge v V E) ==> ~(i= CARD(set_of_edge (v:real^3) (V:real^3->bool)(E:(real^3->bool)->bool)))`)
688 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
689 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`i:num`] wedge_fan2_equal_aff_gt_fan)
691 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)]);
693 REWRITE_TAC[GSYM(EXTENSION)] THEN STRIP_TAC
694 THEN EXISTS_TAC`( power_map_points sigma_fan (x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3)
695 (u:real^3) ((i):num)) ` THEN
696 MP_TAC(ISPECL[`i:num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`] remark_power_map_points) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th->REWRITE_TAC[th])
698 THEN MP_TAC(ARITH_RULE`(i:num) < CARD(set_of_edge v V E) ==> ~(i= CARD(set_of_edge (v:real^3) (V:real^3->bool)(E:(real^3->bool)->bool)))`)
699 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
700 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`;`i:num`] wedge_fan2_equal_aff_gt_fan)
702 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])]);;
709 let UNION1_FAN=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3).
711 FAN(x,V,E)/\ ({v,u}IN E)
713 (UNIV:real^3->bool) = aff {x,v} UNION (UNIONS {w_dart_fan x V E (x,v,w,(sigma_fan x V E v w))|w| {v,w} IN E })
715 (UNIONS {aff_gt {x,v} {w} |w| {v,w} IN E} )
719 THEN MP_TAC (ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`]UNION_FAN) THEN ASM_REWRITE_TAC[]
720 THEN MP_TAC (ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`]eq_set_wdart_fan) THEN ASM_REWRITE_TAC[]
721 THEN DISCH_TAC THEN POP_ASSUM (fun th -> REWRITE_TAC[th])
722 THEN MP_TAC (ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (u:real^3)`]eq_set_aff_gt ) THEN ASM_REWRITE_TAC[]
723 THEN DISCH_TAC THEN POP_ASSUM (fun th -> REWRITE_TAC[th]) THEN ASM_SET_TAC[]);;
727 (* ========================================================================== *)
728 (* DISJOINT IN NODE OF FAN *)
729 (* ========================================================================== *)
733 let disjoint_set_fan=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3) (w1:real^3).
734 FAN(x,V,E)/\ ({v,w}IN E) /\ ({v,w1}IN E)
736 w_dart_fan x V E (x,v,w,(sigma_fan x V E v w)) INTER
737 aff_gt {x,v} {w1}={}`,
739 (let lem =prove(`!x:real^3.
742 CARD {x} = 1`,MESON_TAC[CARD_SING]) in
743 (let lem1=prove(`!x v. ~(x = v)==>(!u. ~(u IN aff {x, v}) <=> ~collinear {x, v, u})`,
744 MESON_TAC[collinear_fan]) in
745 (let lem2=prove(`!v0 v1 w.
746 ~collinear{v0,v1,w} ==>
747 !x. ( &0 = azim v0 v1 w x /\ ~collinear{v0,v1,x} <=> (x IN aff_ge {v0,v1} {w}) /\ ~collinear{v0,v1,x})`,
748 MESON_TAC[AZIM_EQ_0_GE_ALT]) in
751 REPEAT STRIP_TAC THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w1:real^3)`] properties_of_set_of_edge_fan)
752 THEN ASM_REWRITE_TAC[] THEN
753 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
754 THEN ASM_REWRITE_TAC[] THEN
755 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] SIMP_ORBITS_POINTS_FAN)
756 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN DISCH_TAC
757 THEN POP_ASSUM(fun th->GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[th])
758 THEN REWRITE_TAC[IN_ELIM_THM;] THEN STRIP_TAC
759 THEN ASM_REWRITE_TAC[]
760 THEN MP_TAC(ARITH_RULE`i< CARD(set_of_edge (v:real^3) V E)==> ~(i=CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
762 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`i:num`] wedge_fan2_equal_aff_gt_fan)
764 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])
765 THEN DISJ_CASES_TAC(ARITH_RULE`(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))>1 \/ ~((CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))> 1)`)
767 MP_TAC(ARITH_RULE`CARD(set_of_edge (v:real^3) V E)>1==> 0< CARD(set_of_edge v V E)`) THEN ASM_REWRITE_TAC[]
769 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`0:num`] w_dart_eq_wedge3_fan)
770 THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC THEN ASM_REWRITE_TAC[]
771 THEN REWRITE_TAC[wedge2_fan;wedge3_fan;EXTENSION] THEN GEN_TAC THEN
772 REWRITE_TAC[INTER; EMPTY;IN_ELIM_THM]
773 THEN DISJ_CASES_TAC(ARITH_RULE`(i:num)=0 \/ (0< i)`)
775 ASM_REWRITE_TAC[] THEN REAL_ARITH_TAC;(*2*)
777 MP_TAC(ARITH_RULE`CARD(set_of_edge (v:real^3) V E)>1==> ~(0= CARD(set_of_edge v V E))/\ ~(SUC 0= CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
779 ASM_REWRITE_TAC[if_azims_fan]
781 MP_TAC(ARITH_RULE` (0< i)==> SUC (0)= i \/ SUC 0 <i`) THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
783 ASM_REWRITE_TAC[] THEN REAL_ARITH_TAC;(*3*)
785 DISJ_CASES_TAC(SET_RULE`set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)={w} \/ ~(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)={w})`)
787 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (w1:real^3)`;` (v:real^3)`]remark1_fan)
788 THEN ASM_REWRITE_TAC[IN_SING] THEN DISCH_TAC THEN ASM_REWRITE_TAC[power_map_points] THEN REAL_ARITH_TAC;(*4*)
790 MP_TAC(ISPECL[`i:num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`SUC (0):num`] AZIM_LE_POWER_SIGMA_FAN)
791 THEN ASM_REWRITE_TAC[] THEN REAL_ARITH_TAC](*4*)](*3*)](*2*);(*1*)
794 MP_TAC(ARITH_RULE`~(CARD(set_of_edge (v:real^3) V E)>1) /\ (i< CARD(set_of_edge v V E))==> i=0/\ ~(0=CARD(set_of_edge (v:real^3) V E))`) THEN ASM_REWRITE_TAC[]
795 THEN STRIP_TAC THEN ASM_REWRITE_TAC[]
796 THEN ASM_REWRITE_TAC[wedge2_fan;w_dart_fan;if_azims_fan;power_map_points;complement_set;AZIM_REFL;EXTENSION] THEN GEN_TAC THEN
797 REWRITE_TAC[DIFF;INTER;IN_ELIM_THM;GSYM(EXTENSION);COND_ELIM_THM]
798 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (w:real^3)`;` (v:real^3)`] remark1_fan)
799 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
800 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;]lem1) THEN ASM_REWRITE_TAC[]
801 THEN DISCH_TAC THEN POP_ASSUM (fun th-> REWRITE_TAC[th])
803 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`w:real^3`]lem2) THEN ASM_REWRITE_TAC[]
804 THEN DISCH_TAC THEN POP_ASSUM (fun th-> REWRITE_TAC[th] ) THEN ASM_REWRITE_TAC[collinear_fan]
806 DISJ_CASES_TAC(SET_RULE`set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)={w} \/ ~(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)={w})`)
812 MP_TAC(ARITH_RULE`~(CARD(set_of_edge (v:real^3) V E)>1) /\ ~(0= CARD(set_of_edge v V E))==> (1=CARD(set_of_edge (v:real^3) V E))`) THEN ASM_REWRITE_TAC[]
814 THEN MP_TAC(SET_RULE`w IN set_of_edge (v:real^3) V E==> {w} SUBSET set_of_edge (v:real^3) V E`) THEN ASM_REWRITE_TAC[]
816 THEN MP_TAC(ISPECL[`{(w:real^3)}`;`set_of_edge (v:real^3) V E`] FINITE_SUBSET) THEN ASM_REWRITE_TAC[]
818 MP_TAC(ISPEC`w:real^3`lem) THEN ASM_REWRITE_TAC[]
820 THEN MP_TAC(ISPECL[`{(w:real^3)}`;`set_of_edge (v:real^3) V E`]CARD_SUBSET_EQ)
821 THEN ASM_REWRITE_TAC[]]]))));;
824 let disjiont1_cor6dot1 = prove(`!x:real^3 (V:real^3->bool) (E:(real^3->bool)->bool) v:real^3 u:real^3 i:num.
825 wedge3_fan x V E v u i INTER aff {x,v}={}`,
826 REPEAT GEN_TAC THEN REWRITE_TAC[wedge3_fan; INTER] THEN REWRITE_TAC[complement_set; FUN_EQ_THM; EMPTY] THEN
827 GEN_TAC THEN REWRITE_TAC[IN_ELIM_THM] THEN STRIP_TAC THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC
832 let disjoint_fan1=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3).
833 FAN(x,V,E)/\ ({v,w}IN E)
835 w_dart_fan x V E (x,v,w,(sigma_fan x V E v w)) INTER aff {x,v}={}`,
837 THEN DISJ_CASES_TAC(ARITH_RULE`(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))>1 \/ ~((CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))> 1)`)
840 MP_TAC(ARITH_RULE`CARD(set_of_edge (v:real^3) V E)>1==> (0<CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
842 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`0:num`] w_dart_eq_wedge3_fan)
843 THEN ASM_REWRITE_TAC[power_map_points;] THEN DISCH_TAC THEN ASM_REWRITE_TAC[disjiont1_cor6dot1];
845 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (w:real^3)`;` (v:real^3)`] remark1_fan)
846 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
847 THEN ASM_REWRITE_TAC[w_dart_fan;INTER; IN_ELIM_THM;COND_ELIM_THM]
848 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`w:real^3`]aff_subset_aff_ge) THEN ASM_REWRITE_TAC[]
849 THEN ASM_SET_TAC[]]);;
857 let disjoint_fan2=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3) (w1:real^3).
858 FAN(x,V,E)/\ ({v,w}IN E) /\ ({v,w1}IN E) /\ ~(w=w1)
860 w_dart_fan x V E (x,v,w,(sigma_fan x V E v w)) INTER
861 w_dart_fan x V E (x,v,w1,(sigma_fan x V E v w1))={}`,
862 REPEAT STRIP_TAC THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w1:real^3)`] properties_of_set_of_edge_fan)
863 THEN ASM_REWRITE_TAC[] THEN
864 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
865 THEN ASM_REWRITE_TAC[] THEN
866 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] SIMP_ORBITS_POINTS_FAN)
867 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN DISCH_TAC
868 THEN POP_ASSUM(fun th->GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[th])
869 THEN REWRITE_TAC[IN_ELIM_THM;] THEN STRIP_TAC
870 THEN ASM_REWRITE_TAC[]
871 THEN DISJ_CASES_TAC(ARITH_RULE`(CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))>1 \/ ~((CARD(set_of_edge (v:real^3) (V:real^3->bool) (E:(real^3->bool)->bool)))> 1)`)
873 MP_TAC(ARITH_RULE`CARD(set_of_edge (v:real^3) V E)>1==> 0< CARD(set_of_edge v V E)`) THEN ASM_REWRITE_TAC[]
875 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`0:num`] w_dart_eq_wedge3_fan)
876 THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC THEN ASM_REWRITE_TAC[]
878 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`i:num`] w_dart_eq_wedge3_fan)
879 THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC THEN ASM_REWRITE_TAC[wedge3_fan;INTER]
880 THEN POP_ASSUM(fun th -> REWRITE_TAC[])
881 THEN POP_ASSUM(fun th -> REWRITE_TAC[])
882 THEN POP_ASSUM MP_TAC
883 THEN POP_ASSUM MP_TAC
884 THEN POP_ASSUM MP_TAC THEN DISJ_CASES_TAC(ARITH_RULE`i:num =0 \/ SUC(0) <= i`)
886 ASM_REWRITE_TAC[power_map_points];(*2*)
888 DISCH_TAC THEN DISCH_TAC THEN DISCH_TAC THEN ASM_REWRITE_TAC[if_azims_fan] THEN
889 MP_TAC(ARITH_RULE`CARD(set_of_edge (v:real^3) V E)>1==> ~(SUC 0= CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
891 MP_TAC(ARITH_RULE`i<CARD(set_of_edge (v:real^3) V E)==> ~(i= CARD(set_of_edge v V E))`) THEN ASM_REWRITE_TAC[]
892 THEN DISCH_TAC THEN ASM_REWRITE_TAC[IN_ELIM_THM]
893 THEN MP_TAC(ARITH_RULE`SUC 0<= i ==> i:num = SUC 0 \/ SUC(0) < i`) THEN ASM_REWRITE_TAC[] THEN STRIP_TAC
895 ASM_REWRITE_TAC[EMPTY;EXTENSION;IN_ELIM_THM] THEN GEN_TAC THEN REAL_ARITH_TAC;(*3*)
897 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (w:real^3)`;` (v:real^3)`] remark1_fan)
898 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN
899 DISJ_CASES_TAC(SET_RULE`set_of_edge (v:real^3) V E ={w} \/ ~(set_of_edge (v:real^3) V E ={w})`)
901 MP_TAC(ISPECL[`w:real^3`;`set_of_edge (v:real^3) V E`]CARD_SING) THEN ASM_REWRITE_TAC[] THEN
902 POP_ASSUM(fun th->REWRITE_TAC[SYM(th)]) THEN REPEAT(POP_ASSUM MP_TAC) THEN ARITH_TAC;(*4*)
904 MP_TAC(ISPECL[`i:num`;`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`SUC (0):num`] AZIM_LE_POWER_SIGMA_FAN)
905 THEN ASM_REWRITE_TAC[] THEN ASM_REWRITE_TAC[EMPTY;EXTENSION;IN_ELIM_THM] THEN REAL_ARITH_TAC]]];
907 POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN DISCH_THEN(LABEL_TAC"a") THEN DISCH_TAC THEN
908 MP_TAC(ARITH_RULE`~(CARD(set_of_edge (v:real^3) V E)>1) /\ (i < CARD(set_of_edge v V E))
909 ==> (i:num =0)`) THEN ASM_REWRITE_TAC[]
910 THEN DISCH_TAC THEN REMOVE_THEN "a" MP_TAC THEN ASM_REWRITE_TAC[power_map_points]]);;
913 let disjoint_fan3=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3).
914 FAN(x,V,E)/\ ({v,w}IN E)
915 ==>aff{x,v} INTER aff_gt {x,v} {w}={}`,
916 REPEAT STRIP_TAC THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (w:real^3)`;` (v:real^3)`] remark1_fan)
917 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
918 THEN DISJ_CASES_TAC(SET_RULE`aff{(x:real^3),(v:real^3)} INTER aff_gt {x,v} {(w:real^3)}={} \/ (?(u:real^3). u IN aff{x,v} INTER aff_gt {x,v} {w})`)
922 POP_ASSUM MP_TAC THEN STRIP_TAC THEN POP_ASSUM MP_TAC
924 MP_TAC(ISPECL[`x:real^3`;`v:real^3`;`w:real^3`]AFF_GT_2_1)
925 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
926 THEN MP_TAC(ISPECL[`x:real^3`;`v:real^3`]affine_hull_2_fan)
927 THEN ASM_REWRITE_TAC[] THEN DISCH_THEN(LABEL_TAC"a") THEN ASM_REWRITE_TAC[INTER;IN_ELIM_THM;]
929 THEN POP_ASSUM MP_TAC THEN ASM_REWRITE_TAC[VECTOR_ARITH`t1 % x + t2 % v = t1' % x + t2' % v + t3 % w <=> t3 % w = (t1 - t1') % x + (t2 -t2') % v`]
930 THEN POP_ASSUM MP_TAC THEN POP_ASSUM MP_TAC THEN POP_ASSUM (fun th-> REWRITE_TAC[])
931 THEN POP_ASSUM (fun th -> REWRITE_TAC[SYM(th);REAL_ARITH`a+b+c=d+e <=> c = (d-a)+ (e-b)`])
932 THEN DISCH_TAC THEN MP_TAC(REAL_ARITH`&0 < (t3:real) ==> ~(t3= &0)`)
933 THEN ASM_REWRITE_TAC[]THEN DISCH_TAC
934 THEN MP_TAC(ISPEC`t3:real`REAL_MUL_LINV) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
936 THEN MP_TAC(SET_RULE` (t3:real) = (t1- t1') + (t2-t2') ==> (inv t3) *(t3:real) = (inv t3) * ((t1- t1')+ (t2-t2'))`)
937 THEN ASM_REWRITE_TAC[REAL_ARITH`a*(b+c)= a *b + a*c`] THEN POP_ASSUM (fun th-> REWRITE_TAC[SYM(th)])
938 THEN DISCH_TAC THEN DISCH_TAC
939 THEN MP_TAC(SET_RULE` (t3:real) % w= (t1- t1') % (x:real^3) + (t2-t2') % v ==> (inv t3) % ((t3:real)% w) = (inv t3) % ((t1- t1') %x+ (t2-t2') % v)`)
940 THEN ASM_REWRITE_TAC[VECTOR_ARITH`m% (n% p)=a%(b % x + c % v)<=> (m*n) %p = (a *b)%x + (a*c)% v`]
941 THEN POP_ASSUM (fun th-> REWRITE_TAC[SYM(th)])
942 THEN POP_ASSUM(fun th->REWRITE_TAC[SYM(th)] THEN ASSUME_TAC(SYM(th))) THEN REWRITE_TAC[VECTOR_ARITH`&1 %w=w`]
944 THEN SUBGOAL_THEN`w IN aff{(x:real^3),v}` ASSUME_TAC
946 REMOVE_THEN"a"(fun th-> REWRITE_TAC[th;IN_ELIM_THM]) THEN EXISTS_TAC`inv t3 * (t1-t1')` THEN EXISTS_TAC`inv t3 * (t2-t2')`
947 THEN POP_ASSUM(fun th-> REWRITE_TAC[th])
948 THEN POP_ASSUM(fun th-> REWRITE_TAC[th]);
955 let remark3_fan=prove(`!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3) (w1:real^3).
956 FAN(x,V,E)/\ ({v,w}IN E) /\ ({v,w1}IN E) /\ ~(w=w1)
958 aff_gt{x,v} {w} INTER
959 aff_gt {x,v} {w1}={}`,
960 REPEAT STRIP_TAC THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w1:real^3)`] properties_of_set_of_edge_fan)
961 THEN ASM_REWRITE_TAC[] THEN
962 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] ORBITS_EQ_SET_EDGE_FAN)
963 THEN ASM_REWRITE_TAC[] THEN
964 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`] SIMP_ORBITS_POINTS_FAN)
965 THEN ASM_REWRITE_TAC[] THEN DISCH_TAC THEN POP_ASSUM(fun th-> REWRITE_TAC[SYM(th)])THEN DISCH_TAC
966 THEN POP_ASSUM(fun th->GEN_REWRITE_TAC(LAND_CONV o RAND_CONV o ONCE_DEPTH_CONV)[th])
967 THEN REWRITE_TAC[IN_ELIM_THM;] THEN STRIP_TAC
968 THEN ASM_REWRITE_TAC[] THEN POP_ASSUM MP_TAC THEN DISJ_CASES_TAC(ARITH_RULE`i:num =0 \/ 0 < i`)
970 ASM_REWRITE_TAC[power_map_points];
972 MP_TAC(ARITH_RULE`i<CARD(set_of_edge (v:real^3) V E)/\ (0<i)==> ~(i= CARD(set_of_edge v V E)) /\ ~(0=CARD(set_of_edge (v:real^3) V E))`) THEN ASM_REWRITE_TAC[] THEN DISCH_TAC
973 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`i:num`] wedge_fan2_equal_aff_gt_fan)
974 THEN MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`0:num`] wedge_fan2_equal_aff_gt_fan)
975 THEN ASM_REWRITE_TAC[power_map_points] THEN DISCH_TAC THEN DISCH_TAC
976 THEN POP_ASSUM(fun th->REWRITE_TAC[SYM(th)])
977 THEN POP_ASSUM(fun th->REWRITE_TAC[SYM(th)])
979 THEN ASM_REWRITE_TAC[wedge2_fan;if_azims_fan;power_map_points;INTER;IN_ELIM_THM;AZIM_REFL;]
980 THEN DISCH_TAC THEN POP_ASSUM(fun th->REWRITE_TAC[SYM(th)])
981 THEN DISJ_CASES_TAC(REAL_ARITH`azim x v w w1 = &0 \/ ~(azim x v w w1 = &0)`)
983 MP_TAC(ISPECL[`(x:real^3) `;`(V:real^3->bool)`;` (E:(real^3->bool)->bool) `;` (v:real^3)`;` (w:real^3)`;`w1:real^3`] UNIQUE_AZIM_0_POINT_FAN)
984 THEN ASM_REWRITE_TAC[];
985 ASM_REWRITE_TAC[EMPTY;EXTENSION;IN_ELIM_THM] THEN POP_ASSUM MP_TAC THEN REAL_ARITH_TAC]]);;
988 let VBTIKLP=prove(`(!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (u:real^3).
989 FAN(x,V,E)/\ ({v,u}IN E)
991 (UNIV:real^3->bool) = aff {x,v} UNION (UNIONS {w_dart_fan x V E (x,v,w,(sigma_fan x V E v w))|w| {v,w} IN E })
993 (UNIONS {aff_gt {x,v} {w} |w| {v,w} IN E} ))
995 (!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3).
996 FAN(x,V,E)/\ ({v,w}IN E)
998 w_dart_fan x V E (x,v,w,(sigma_fan x V E v w)) INTER aff {x,v}={})
1000 (!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3) (w1:real^3).
1001 FAN(x,V,E)/\ ({v,w}IN E) /\ ({v,w1}IN E)
1003 w_dart_fan x V E (x,v,w,(sigma_fan x V E v w)) INTER
1004 (aff_gt {x,v} {w1})={})
1006 (!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3) (w1:real^3).
1007 FAN(x,V,E)/\ ({v,w}IN E) /\ ({v,w1}IN E) /\ ~(w=w1)
1009 w_dart_fan x V E (x,v,w,(sigma_fan x V E v w)) INTER
1010 w_dart_fan x V E (x,v,w1,(sigma_fan x V E v w1))={})
1012 (!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3) (w1:real^3).
1013 FAN(x,V,E)/\ ({v,w}IN E) /\ ({v,w1}IN E) /\ ~(w=w1)
1015 aff_gt{x,v} {w} INTER
1016 aff_gt {x,v} {w1}={})
1017 /\ (!(x:real^3) (V:real^3->bool) (E:(real^3->bool)->bool) (v:real^3) (w:real^3).
1018 FAN(x,V,E)/\ ({v,w}IN E)
1019 ==>aff{x,v} INTER aff_gt {x,v} {w}={})
1021 MESON_TAC[UNION1_FAN;disjoint_set_fan;disjoint_fan1;disjoint_fan2;remark3_fan;disjoint_fan3]);;